Tribologische Optimierung der Gestalt und Beschichtung von Führungsleisten für das BTA-Tiefbohren von hochlegierten Stählen

为了在BTA深孔钻探导向瓦的摩擦学优化方面获得更多的专业知识，该项目的继续是必要的。在这个项目中，开发了一条新的流程链。该链条包括具有减摩TA-C的涂层。此外，前处理和后处理均由微细加工实现。当完成未涂覆的衬底时，该工艺实现了轴向引入区的明确形状优化。作为后处理的涂装是有效去除涂层缺陷的关键。改进后的导瓦耐磨性能明显好于传统导瓦。开发了一种最佳工艺策略，该策略允许通过对基板进行微精加工来优化导向垫的形状。然而，关于涂层，关于涂层特性与BTA过程中的磨损行为之间的相关性的信息还不够充分。因此，有必要进行大量涂层的基础分析，并应在项目的第二阶段内进行。此外，还应结合其他涂层分析微精加工对导垫形状优化的效果。

The continuation of this project is necessary to gain more expertise in the tribological optimization of guide pads for the BTA deep hole drilling. In this project a new process chain has been developed. This chain includes the coating with friction reducing ta-C. Moreover, the pre- and aftertreatmentis realized by microfinishing. This process effects a defined shape optimization of the axial lead-in-area when finishing the uncoated substrate. The finishing as an after-treatment is responsible for an effective removal of coating defects. The wear behavior of the modified guide pads is significantly better than the wear behavior of conventional pads. An optimum process strategy has been developed which allows for the shape optimization of the guide pads by microfinishing the substrate. However, concerning the coating, there is no sufficient information about the correlation of the coating characteristics and the wear behavior in the BTA process. Thus, a fundamental analysis with a bigger number of coatings is necessary and should be conducted within a second phase of the project. Moreover, the effectiveness of the shape optimization of guide pads by microfinishing should be analyzed by the use of other coatings.